1213113100200 has 48 divisors (see below), whose sum is σ = 3760650612480. Its totient is φ = 323496826560.

The previous prime is 1213113100187. The next prime is 1213113100201. The reversal of 1213113100200 is 20013113121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1213113100200.

It is not an unprimeable number, because it can be changed into a prime (1213113100201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1010926984 + ... + 1010928183.

It is an arithmetic number, because the mean of its divisors is an integer number (78346887760).

Almost surely, 2^{1213113100200} is an apocalyptic number.

1213113100200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213113100200 is an abundant number, since it is smaller than the sum of its proper divisors (2547537512280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213113100200 is a wasteful number, since it uses less digits than its factorization.

1213113100200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021855186 (or 2021855177 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1213113100200 its reverse (20013113121), we get a palindrome (1233126213321).

The spelling of 1213113100200 in words is "one trillion, two hundred thirteen billion, one hundred thirteen million, one hundred thousand, two hundred".